:root{--font-family: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif;--bg-gradient: linear-gradient(135deg, #4b6cb7 0%, #182848 100%);--glass-bg: rgba(255, 255, 255, .1);--glass-border: rgba(255, 255, 255, .2);--glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, .37);--text-color: #ffffff}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-family);background:var(--bg-gradient);min-height:100vh;color:var(--text-color);display:flex;justify-content:center;align-items:flex-start;padding-top:40px;overflow-x:hidden}#root{width:100%;max-width:600px;padding:16px}.glass-container{background:var(--glass-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:16px;border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);padding:1.75rem}h1{text-align:center;margin-bottom:2rem;font-weight:700;letter-spacing:-.025em}.input-row{display:flex;gap:10px;width:100%}.input-row.top{margin-bottom:12px}.input-row.bottom{justify-content:center;margin-bottom:2rem}input{flex:1;padding:12px 16px;border-radius:12px;border:1px solid var(--glass-border);background:rgba(255,255,255,.1);color:#fff;font-size:1rem;outline:none;transition:all .3s ease}input::placeholder{color:#fff9}input:focus{background:rgba(255,255,255,.2);border-color:#ffffff80}button{cursor:pointer;border:none;border-radius:12px;padding:12px 20px;font-weight:600;transition:all .3s ease}.btn-primary{background:#ffffff;color:#182848}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0003}.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}.item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:rgba(255,255,255,.05);border-radius:12px;border:1px solid transparent;transition:all .2s ease}.item:hover{background:rgba(255,255,255,.1);border-color:var(--glass-border)}.item.completed span{text-decoration:line-through;text-decoration-color:#f44;text-decoration-thickness:2px;opacity:.8}.item-actions{display:flex;gap:8px}.btn-icon{background:transparent;color:#fffc;padding:8px;border-radius:8px}.btn-icon:hover{background:rgba(255,255,255,.2);color:#fff}.btn-delete:hover{background:rgba(255,59,48,.2);color:#ff3b30}